<!DOCTYPE html>
<body lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    html,body{
        margin: 0;
        padding: 0;
    }
    .test-demo{
        width: 100%;
        height: 60px;
        background-color: deepskyblue;
        color: white;
    }
    .test-demo-left{
        float: left;
        margin-left: 30px;
        border-left: 1px solid #fff;
    }
    .test-demo-right{
        float: right;
        margin-right: 30px;
        border-left: 1px solid #fff;
    }
</style>
<body>
<div class="test-demo">
    <div class="test-demo-left">left</div>
    <div class="test-demo-right">right</div>
</div>
<!--<img src="/static/images/1.jpg"></body>-->
</body>
</html>